Seasonal variations of Mercury's magnesium dayside exosphere from MESSENGER observations
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- 作者：Aimee W. Merkela ; aimee.merkel@colorado.edu" class="auth_mail" title="E-mail the corresponding author ; Timothy A. Cassidya ; Ronald J. Vervack Jr.b ; William E. McClintocka ; Menelaos Sarantosc ; d ; Matthew H. Burgere ; Rosemary M. Killenf
- 刊名：Icarus
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：281
- 期：Complete
- 页码：46-54
- 全文大小：3157 K
文摘
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We describe the first orbital observations of Mercury's magnesium exosphere.
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The observed brightness is consistent with very little year-to-year variability.
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Mg is enhanced near the dawn terminator on both the day and nightside.
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A warm source (average ∼6000 K) dominates the dayside throughout the Mercury year.
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Impact vaporization is the most probable main source of the dayside Mg exosphere.